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Diurnal fluctuation in the composition of chlorophyll a/b light harvesting antenna of photosystem II in young wheat leaves
Author(s) -
Liker Erika,
Garab Gyõzõ
Publication year - 1995
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1034/j.1399-3054.1995.930126.x
Subject(s) - photosystem ii , antenna (radio) , thylakoid , chlorophyll , chlorophyll a , photosystem i , photosystem , biology , botany , chemistry , photosynthesis , chloroplast , biochemistry , telecommunications , computer science , gene
We investigated the diurnal fluctuation in the composition of the light harvesting chlorophyll a/b antenna of photosystem II in young wheat ( Triticum aestivum ) leaves grown under periodic day/night irradiation. By means of gel electrophoresis of the polypeptides of thylakoid membranes, we determined the amount of 25 kDa and 27 kDa polypeptides, which are the main components of the peripheral and inner antenna subpopulations, respectively. Our data show a preferential fluctuation in the amount of the 25 kDa protein relative to the 27 kDa polypeptide, in parallel to the fluctuation in the amount of chlorophyll a/b antenna of photosystem II, which suggests that the peripheral antenna plays a role in the diurnal adjustment of the antenna size.